Get product variations in product loop

New to WC. I see that variations are stored in the wp_posts table as an additional post with the post parent set to, well, the “Product Post” that created them. Makes sense. My Question is how do I retrieve these efficiently? For instance:

<?php
       // Get
	$args = array(
		'post_type' => 'product',
		'posts_per_page' => 3,
		'category' => 'care',
		'order' => 'ASC'
	);
	$plans = get_posts( $args );

	foreach($plans as $plan):

		$args = array(
			'post_parent' => $plan->ID,
			'post_type'   => 'product_variation',
			'numberposts' => -1,
			'post_status' => 'any'
		); 

		$variations = get_posts( $args );

		// Do stuff with product variation data

	endforeach;

 ?>

The above works. However, there must be a better way?

https://wordpress.org/plugins/woocommerce/